WebCam

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Shopping Guide - Webcam

Having a webcam connected to your computer is like the Jetsons phone becoming reality. People can finally talk and have the opportunity to see who is on the other side of the line.

Nowadays the webcams have become virtually indispensable for those who travel to other cities or even countries and need be isolated from their families and friends. The need has become so obvious that some models of notebook already leaves the factory with this peripheral attached to the screen.

Check here what factors should be considered at the time of choosing a webcam.

What are the options for using a webcam?

Currently the most important use for a webcam is the interaction with programs to communicate instantly as MSN, Yahoo Messenger, AIM, ICQ and Skype. With them you can write or talk with others and transmit their image with their voice or text typed. Another option is video-record messages: you place the camera with microphone in front of you, write what you mean and closes a file that can be sent to one or more recipients. Finally you can also use a webcam as a small camera. However, we must emphasize that a webcam hardly reaches the table resolution of a digital camera.

What is CMOS sensor?

The quality of the camera's sensor is one of the main responsible for the quality of video that the webcam is capable of producing. The CMOS sensors (Complementary Metal Oxide Semiconductor) use standards process for native modern CPU (central processing unit of the computer). Because CMOS chips require less power than others, most webcams, as well as various electronic devices that use battery, currently uses CMOS sensors.

What's CCD sensor?

The CCD sensor (Charge-Coupled Device) make use of an older technology of semiconductors. A short time ago, the CCD sensors patterns had the best quality of image (images of low noise) in its class. However, due to the continuous development of CMOS technology, the CCD sensors now face a serious competition .

How does the tracking Face work?

The technologies of crawling face help automatically keep a face framed even when in motion. These technologies track shape, color and motion, adjusting the view of the webcam to keep the face always centered on the screen.

How important in the angle of vision?

The field of vision is the track that the lens of the webcam view at any given time. The field of vision is represented by a number of degrees (for example, 25).

Are there wireless webcams?

Yes, but the most common is to find webcams with USB connection.

Are the webcams with interpolated image better?

Neither better nor worse. Actually any webcam interpolates the image. This effect is obtained with the help of a software that doubles the lines of pixels captured by the camera. As an image is increased, gaps are created between the pixels. The interpolation fill those gaps with the repetition of the pixels that are around them.

What does the PTZ acronym mean?

The PTZ (Pan / Tilt / Zoom) allows the user to change the view of the camera. Some of the Logitech webcams have a digital PTZ that allows the user to adjust the area of focus (frame of the video) to focus on specific areas within the field of view of the camera. The QuickCam Orbit of Logitech takes this to a further step by using a panoramic view of ability and inclination mechanical together with a capacity of digital zoom. This ability mechanics allows the camera from moving in any direction, providing a larger field of vision than a stationary camera.